Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2cd54d9bedb79a97f014e86c0da393416b264eb3
Commit: 2cd54d9bedb79a97f014e86c0da393416b264eb3
Parent: 79eb885c96b5ccf8bbffd0dddc4c15a5dd436a1c
Author: Mike Anderson <[EMAIL PROTECTED]>
AuthorDate: Wed May 9 02:32:57 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Wed May 9 12:30:47 2007 -0700
dm: allow offline devices
Allow check_device_area to succeed if a device has an i_size of zero. This
addresses an issue seen on DASD devices setting up a multipath table for
paths
in online and offline state.
Signed-off-by: Mike Anderson <[EMAIL PROTECTED]>
Signed-off-by: Alasdair G Kergon <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/md/dm-table.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 05befa9..2fc199b 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -425,13 +425,15 @@ static void close_dev(struct dm_dev *d, struct
mapped_device *md)
}
/*
- * If possible (ie. blk_size[major] is set), this checks an area
- * of a destination device is valid.
+ * If possible, this checks an area of a destination device is valid.
*/
static int check_device_area(struct dm_dev *dd, sector_t start, sector_t len)
{
- sector_t dev_size;
- dev_size = dd->bdev->bd_inode->i_size >> SECTOR_SHIFT;
+ sector_t dev_size = dd->bdev->bd_inode->i_size >> SECTOR_SHIFT;
+
+ if (!dev_size)
+ return 1;
+
return ((start < dev_size) && (len <= (dev_size - start)));
}
-
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